hello all,i created a simple cmp bean include find method,and it is deployed correct,this cmp connect to this tx dataSource that reght confnfigured in xml description,when i use the find method the select the value from ds it runs correct,then use create it does not work

see the error words :

Could not create entity:java.sql.SQLException: Unable to get Connection: javax.resource.ResourceException: Could not enlist in transaction on entering meta-aware object!javax.transaction.SystemException: Could not enlist XAResource!javax.transaction.RollbackException: Already marked for rollback